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The Content Of The Heavy Metal Elements In Well Water Of Farmers In Shuangliu County During 2008 And 2012

Posted on:2016-06-01Degree:MasterType:Thesis
Country:ChinaCandidate:K LiFull Text:PDF
GTID:2271330482475472Subject:Food processing and safety
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With the rapid development of China’s reform and opening up and economic society, the gradual increase in people’s health awareness, more and we are on the production and living water demand more, on the water quality requirements are increasingly high, at the same time as people unreasonable emissions, lead to groundwater pollution is becoming more and more heavy, especially the heavy metal pollution of water seriously affect our health.In this paper, through the determination of the content of heavy metals in water retention well from 2008 to 2012 in 10 townships of Shuangliu county, with Shuangliu county industrialization and city to change a course, a comprehensive analysis of its causes, to find out the development trend of the law, in order to cope with the increasingly serious water pollution situation, timely and effective control of the quality of information, will burst water environmental pollution, ecological damage events for more precious time for the supervision and management department, to take timely measures, reduce the losses caused by the accidents, improve the quality of people’s drinking water. At the same time also provides decision-making basis for the supervision department, the adjustment of industrial and agricultural irrigation, the regulators have a definite object in view of the supervision of key enterprises.This study collected Shuangliu county 10 villages and towns from 2008 to 2012 monthly water, spectrophotometry, atomic fluorescence spectrometry were measured in water samples of cadmium, lead, chromium, arsenic content by GB in inductively coupled plasma mass spectrometry (ICP-MS), diphenyl carbonyl dihydrazine, finishing the formation of the data. Will data classification and comparison, we get the classification chart, according to the characteristics of economic development of the Shuangliu county each villages and towns, graphical analysis causes, to judge the trend of its development.According to the graphics of the contents of heavy metal elements, some of the following phenomena are found. First, with the state to promote the urbanization process, improve the urbanization rate of overall development goal, the ecological environment all over the world, natural environment have suffered different degrees of damage, although the Shuangliu county currently the contents of heavy metals in wells in the region has not yet exceeded the national standard for drinking water, but well the contents of heavy metals in water there have been rising trend. In Dongsheng Street, for example, Dongsheng Street wells in arsenic element average content from 0.00145 mg/L in 2008 growth to 0.00351 mg/L in 2012; chromium element average content from 0.00255 mg/L in 2008 increased to 0.00328 mg/L in 2012; lead element average content from 0.00189 mg/L in 2008 increased to 2012 0.00357 mg/ L; cadmium average content from 0.00224 mg/L in 2008 growth to 0.00363 mg/L in 2012, growth rate,142%,28.6%,88.9%,62.1% respectively. Secondly, the content of heavy metals in Shuangliu county Xihang hong street, Jiujiang streets, Gongxing Street wells was significantly higher than that of other regions, the contents of heavy metals in water from wells in certain months for these streets is very close to the critical value, cadmium element content in 2012 April Xihang hong Street wells has reached a 0.0049mg/L; lead elements in April 2012 Jiujiang Street wells reached 0. From January to June of 2012 Gongxing Street wells cadmium content in all above 0.0045mg/L, March 2011 and even reached the 0.0049mg/L. Third, the contents of the heavy metal ions in July, August and September are obviously lower than the other month.. For example comparisons to Dongsheng Street wells in the contents of Pb, July, August and September wells Pb content than other months lower on average more than 50%. Through the research, the water quality of the main towns in Shuangliu county is relatively good.. Xihang hong, Jiujiang, Gongxing due to industrial enterprises concentrated, there is the risk of excessive heavy metal content in water, the relevant departments should intensify supervision, timely processing of the environmental pollution and ecological destruction events. Enterprises should also improve the awareness of environmental protection, improve the production process and technology, the use of heavy metal processing features suitable for enterprise, reduce emissions.
Keywords/Search Tags:Shuangliu county, Well water, Arsenic, Chromium, Lead, Cadmium
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